单项选择题
Smoking in bed on a ship is prohibited（）.
A.at all times
B.during evening hours
C.unless another person is present
D.during drilling operations
点击查看答案&解析
相关考题
-
单项选择题
Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.
A.shall
B.should
C.may
D.would -
单项选择题
Proper use shall be made（）radar equipment if fitted and operational.
A.of
B.to
C.on
D.with -
单项选择题
Keep clear（）the buoy.
A.to
B.on
C.of
D.for
